Solve.There are n people in a room. The number N of possible handshakes by all the people in the room is given by the function N(n) = 
. For what number n of people is 28 ? N ? 325 ?
A. {n|9 ? n ? 25}
B. {n|8 ? n ? 26}
C. {n|7 ? n ? 28}
D. {n|10 ? n ? 25}
Answer: B
Mathematics
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A. 
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